Initially, MonkeyGripp tank extenders began as a two-piece design. The primary goal of MonkeyGripp was to support riders' outside leg, not provide distance between the rider and the tank. The two-piece design avoided interference with riders' tuck position and minimized weight. Riders expressed the need to stay back in the saddle and wanted their tank extension to provide rider setback as well as provide the confidence enhancing support for their outside leg. We actually prefer the two-piece design because the gap between them encourages riders to develop the habit of keeping their body away from the tank. The one-piece design allows the rider to depend on the product to do the work for them and therefore they do not have to work at developing the habit to stay back in the saddle. The feedback we have received has been an overwhelming preference for a one-piece design so from now on all MonkeyGripp extenders will utilize the one-piece design. The two-piece designs will continue to be available. Below is an example of the two-piece design (06-10 GSXR 600 & 750).